Coffee husk: an inexpensive substrate for production of citric acid by Aspergillus niger in a solid-state fermentation system.
作者： V. S. Shankaranand , B. K. Lonsane
DOI: 10.1007/BF00360879
关键词:
摘要: Aspergillus niger CFTRI 30 produced 1.3 g citric acid/10 dry coffee husk in 72 h solid-state fermentation when the substrate was moistened with 0.075 M NaOH solution. Production increased by 17% adding a mixture of iron, copper and zinc to medium but enrichment moist solid (NH4)2SO4, sucrose or any four enzymes did not improve production. The production about 1.5 at conversion 82% (based on sugar consumed) under standardized conditions demonstrates commercial potential using this way.
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